package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatProperties weChatProperties;

    public User wxLogin(UserLoginDTO userLoginDTO) {
        String code = userLoginDTO.getCode();
        String openid = getOpenid(code);

        if (openid == null) {
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        User user = userMapper.selectOne(new QueryWrapper<User>().eq("openid", openid));
        if (user == null) {
            user = new User();
            user.setOpenid(openid);
            userMapper.insert(user);
        }
        return user;
    }

    private String getOpenid(String code) {
        Map<String, String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type", "authorization_code");

        String json = HttpClientUtil.doGet(weChatProperties.getWeChatLoginUrl(), map);
        //log.info("微信登录返回结果：{}", json);

        JSONObject jsonObject = JSON.parseObject(json);
        //log.info("微信用户的openid为：{}", openid);
        return jsonObject.getString("openid");
    }
}
